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STMicroelectronics TS1871AILT
- Part No.:
- TS1871AILT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TS1871AILT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TS1871AILT from STMicroelectronics is a single-channel, rail-to-rail input/output operational amplifier optimized for ultra-low-voltage battery-powered systems. It operates from 1.8 V to 6 V, delivers 1.6 MHz gain bandwidth, consumes only 400 µA per channel, and supports rail-to-rail output swing within 100 mV of each supply rail under 600 Ω load - enabling direct interface with modern low-voltage microcontrollers and audio codecs in portable electronics.
For engineers reviewing the TS1871AILT datasheet, TS1871AILT pinout, TS1871AILT application, or TS1871AILT equivalent, key selection criteria include its 1.8 V minimum supply operation, extended common-mode input range (VCC− −0.2 V to VCC+ +0.2 V), 65 mA output drive capability, ±2 kV HBM ESD rating, and SOT23-5L package compatibility with space-constrained PCB layouts.
Technical Context
The TS1871AILT employs a CMOS input stage enabling rail-to-rail input common-mode voltage extension beyond the supply rails by ±200 mV at 25 °C, while its output stage delivers true rail-to-rail swing with <100 mV headroom into 600 Ω. Its 1.6 MHz unity-gain stable architecture ensures predictable frequency response without external compensation across supply voltages from 1.8 V to 6 V.
Designed for low-noise analog signal conditioning, it achieves 27 nV/√Hz input voltage noise at 1 kHz and maintains 53° phase margin with 100 pF capacitive load. Its 0.54 V/µs slew rate and 91 dB large-signal voltage gain (RL = 2 kΩ) support accurate amplification of sensor outputs and audio signals without distortion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 6 V - enables direct use with single-cell Li-ion, NiMH, or alkaline batteries without regulation. |
| Gain Bandwidth Product | 1.6 MHz - supports stable closed-loop gain up to ~10× at 100 kHz for sensor signal amplification. |
| Supply Current per Channel | 400 µA typical - extends battery life in always-on wearable and IoT sensor nodes. |
| Input Offset Voltage | 1.5 mV max (–40 °C to +125 °C) - ensures ≤1.5 mV DC error in precision DC-coupled front-ends. |
| Output Drive Capability | 65 mA source / 80 mA sink - drives 600 Ω headphone loads or 2 kΩ ADC input networks directly. |
| Common-Mode Input Range | VCC− −0.2 V to VCC+ +0.2 V - accepts inputs beyond supply rails, simplifying level-shifting in mixed-supply systems. |
| ESD Tolerance | 2 kV HBM - meets IEC 61000-4-2 Level 2 for handheld device robustness. |
Pinout & Package
SOT23-5L package: 5-pin, ultra-small surface-mount outline (2.9 × 2.8 × 1.3 mm), moisture sensitivity level 1, RoHS-compliant, ECOPACK® certified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier output | Delivers rail-to-rail voltage swing; capable of sourcing/sinking ≥65 mA into resistive loads. |
| 2 (–IN) | Inverting input | Differential input node; high-impedance CMOS input (Iib ≤ 150 nA) compatible with high-Z sensors. |
| 3 (VCC–) | Negative supply | Ground reference for single-supply operation; supports 0 V as VCC− down to 1.8 V total supply. |
| 4 (+IN) | Non-inverting input | High-impedance input accepting signals from VCC− −0.2 V to VCC+ +0.2 V - enables biasing outside supply rails. |
| 5 (VCC+) | Positive supply | Accepts 1.8–6 V; internal regulation not required - reduces BOM count in battery-fed designs. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full dynamic range utilization in 1.8 V systems - no lost headroom at supply boundaries. |
| Extended common-mode input range | ±200 mV beyond supplies allows direct connection to unbuffered DAC outputs or thermistor dividers without level shifters. |
| Low quiescent current | 400 µA per channel supports >1-year battery life in coin-cell-powered sensor transmitters (e.g., BLE beacons). |
| High output drive | 65 mA source capability eliminates need for external buffer stages when driving 600 Ω audio loads or SAR ADC references. |
| Unity-gain stability | Operates stably at gain = 1 without external compensation - reduces layout complexity and component count. |
Applications
| Portable Audio Amplification | Battery-Powered Sensor Interface |
|---|---|
|
Use Scenario: Driving 600 Ω stereo headphone loads in Bluetooth earbuds powered by a single 3.7 V Li-ion cell. IC Role / Device Role / Timing Role: Single-supply headphone driver amplifier with rail-to-rail output swing and low THD (0.01 %). Use Value: Delivers 1.6 Vpp output into 600 Ω at 3.3 V supply without clipping, eliminating need for charge-pump voltage doublers. |
Use Scenario: Amplifying output of a 100 kΩ NTC thermistor in a wearable temperature monitor running on CR2032 coin cell. IC Role / Device Role / Timing Role: Precision DC-coupled non-inverting amplifier with 1.5 mV max offset and 27 nV/√Hz noise. Use Value: Maintains ±0.5 °C measurement accuracy over –40 °C to +85 °C while drawing only 400 µA - extending battery life to 2+ years. |
| Laptop Touchpad Signal Conditioning | Low-Voltage Industrial Data Acquisition |
|
Use Scenario: Buffering and amplifying capacitive touch sensor signals in ultrabook trackpads operating from 1.8 V logic rails. IC Role / Device Role / Timing Role: High-input-impedance buffer with rail-to-rail input range extending below ground (VCC− −0.2 V). Use Value: Accepts sensor signals down to –0.2 V relative to ground, enabling direct AC coupling without negative bias generation. |
Use Scenario: Front-end amplification for 12-bit SAR ADC in a 1.8 V industrial sensor node monitoring vibration or pressure. IC Role / Device Role / Timing Role: Gain-of-10 signal conditioner with 1.6 MHz GBW and 53° phase margin into 100 pF ADC input capacitance. Use Value: Settles to 0.1% in <1 µs with no overshoot, ensuring accurate sampling at 1 MSPS without external compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rail-to-rail operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP6001T-E/OT (Microchip) | Lower GBP (1 MHz), higher Vio (2.5 mV max), same SOT23-5 package and 1.8 V operation. | Less suitable for high-frequency sensor signals (>100 kHz) or precision DC measurements requiring <2 mV offset. | Preferred where cost is critical and 1 MHz bandwidth suffices; verify THD and noise specs for audio paths. |
| TLV9001IDBVR (TI) | Higher ICC (650 µA typ), wider Vio range (0.25–4 mV), same rail-to-rail I/O and SOT23-5 footprint. | Not recommended for multi-year battery life targets due to 63% higher quiescent current vs. TS1871AILT. | Choose when higher output current (125 mA) or better CMRR (90 dB) is prioritized over ultra-low power. |
Compared with MCP6001T-E/OT and TLV9001IDBVR, the TS1871AILT uniquely balances 1.6 MHz bandwidth, 400 µA supply current, and 1.5 mV max offset in SOT23-5 - making it optimal for space- and power-constrained precision analog front-ends where all three parameters must be simultaneously optimized.
Availability
TS1871AILT is available at Aetrix Electronics and suitable for portable audio devices, battery-powered sensor nodes, laptop touch interfaces, and low-voltage industrial data acquisition systems requiring stable component supply across long production lifecycles.
Supply support for TS1871AILT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing silicon solutions for automotive, industrial, and consumer markets since 1987.
The TS187x family was developed specifically for ultra-low-voltage analog signal conditioning in battery-operated portable equipment - emphasizing rail-to-rail performance, micropower efficiency, and robustness in compact packages like SOT23-5L.
FAQ
Is the TS1871AILT qualified for automotive applications?
No - the TS1871AILT is rated for industrial temperature range (–40 °C to +125 °C) but is not AEC-Q100 qualified. For automotive use, ST offers the TS1871IYLT variant (marked K182), which undergoes additional screening per AEC-Q100 Grade 2 requirements and is packaged in the same SOT23-5L outline.
Can the TS1871AILT drive capacitive loads without oscillation?
Yes - it maintains 53° phase margin with up to 100 pF capacitive load, supporting direct connection to ADC inputs and long PCB traces. For loads >100 pF, a small series resistor (10–50 Ω) at the output is recommended to preserve stability, as confirmed in Figure 33 of the datasheet.
What is the maximum output current capability of the TS1871AILT?
The TS1871AILT can source up to 65 mA and sink up to 80 mA continuously under thermal limits (Tj ≤ 150 °C). At 3.3 V supply and 25 °C ambient, it sustains 60 mA source current with <100 mV saturation voltage - verified in Figure 22 and Table 4 of the datasheet.
Does the TS1871AILT require external compensation for unity-gain operation?
No - it is internally compensated for unity-gain stability across the full 1.8–6 V supply range and –40 °C to +125 °C temperature range. No external components are needed for stable operation at gain = 1, as stated in the Features section and validated in Figure 25–27 (gain/phase vs. frequency).
TS1871AILT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.6V/µs
- Gain Bandwidth Product:
- 1.8 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 70 nA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 500µA
- Current - Output / Channel:
- 80 mA
- Voltage - Supply Span (Min):
- 1.8 V
- Voltage - Supply Span (Max):
- 6 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TS1871AILT FAQ
1.How can I place an order for TS1871AILT through Aetrix?
Please submit a Request for Quotation (RFQ) for TS1871AILT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TS1871AILT reliable?
The price and inventory of TS1871AILT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS1871AILT is usually 5 days.
3.What payment methods are accepted for TS1871AILT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS1871AILT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS1871AILT?
TS1871AILT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS1871AILT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TS1871AILT?
For technical support, including TS1871AILT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS1871AILT requirements.
6.How does Aetrix verify that TS1871AILT is sourced from the original manufacturer or authorized distributors?
All TS1871AILT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TS1871AILT meets industry standards.
7.What is the process for return or replacement of TS1871AILT?
All TS1871AILT units undergo pre-shipment inspection (PSI). If there is an issue with TS1871AILT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TS1871AILT part is unused and in its original packaging.
Return procedure for TS1871AILT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TS1871AILT Tags
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LM358DT
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